yeah...what a waste of 2 dollars...it slowed my 3g down so much i had to uninstall it.

the only other thing you can use is keyvib...but i'm not sure if it's still in cydia anymore.

No, it is not
It is sad, there are billions of apps for iPhone but only some of them is really useful. And when I find one at last, the developer has gone.
It seems to me that iPhone much more for fun, than for work or productivity.
I was using my WM pdaphone with a lots of essential apps, but I hardly find similars for iPhone

The reason there hasn't been a fully 3GS-compatible update to HapticPro (or other similar softwares) is that Apple broke the vibration API with 3.0; it still performs it's function as before, but adds a slight pause on some iPhones. On the 3GS this pause is much longer.

Some users have reported that setting up as a new iPhone in iTunes instead of restoring from backup when installing 3.0 firmware helps reduce the delay so that HapticPro is usable. My limited research supports this (on the iPhone 3G and 3GS, but forcing everyone to wipe their devices and start clean is hardly a solution)

Also, some users have tested HapticPro on 3.1 and have reported good results; I don't have 3.1 yet, so I cannot verify this.

The reason there hasn't been a fully 3GS-compatible update to HapticPro (or other similar softwares) is that Apple broke the vibration API with 3.0; it still performs it's function as before, but adds a slight pause on some iPhones. On the 3GS this pause is much longer.

Some users have reported that setting up as a new iPhone in iTunes instead of restoring from backup when installing 3.0 firmware helps reduce the delay so that HapticPro is usable. My limited research supports this (on the iPhone 3G and 3GS, but forcing everyone to wipe their devices and start clean is hardly a solution)

Also, some users have tested HapticPro on 3.1 and have reported good results; I don't have 3.1 yet, so I cannot verify this.

Pls don't give up!! The idea of Haptic pro is great and I am still waiting for a more usable version in the future